New with tags White House Black Market Midi Weekender Dress Lace-Up Back Sleeveless Bodycon Black Size XS. The unexpected lace-up back detail takes this latest work-to-weekend dress to the next level. Midi length and curve-loving fit are a perfect match with anything from trainers to stilettos, dress up or down. • bodycon silhouette • sleeveless • round neck • lace back • shell + lining - rayon, spandex • machine wash or dry clean Layer under a blazer for work or pair with strappy heels for a hot night out.